Method and apparatus for producing fibrous board
United States Patent 1539542

Inventors:
Henry, Carmichael
Publication Date:
05/26/1925
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Assignee:
Irving, Hollander
Nourbourn J. W.
Harry, Cobb W.
UPSON CO
Primary Class:
162/203
Other Classes:
162/903, 162/349, 162/301
International Classes:
D21J1/00